What is the likely impact of an OPSEC measure on operational effectiveness, if implemented? What is the probably risk to the mission success (effectiveness) if the unit does not implement the measure? What is the probable risk to the mission success, if an OPSEC measure does not work?
Suffocation is a general term to indicate that form of asphyxia, which is caused by deprivation of oxygen, either due to lack of oxygen in the environment or from obstruction of the air-passages.
The scientific term for fainting is syncope. Fainting is usually caused by a lack of oxygen in the brain. Every case of fainting should be treated as a medical emergency until the cause is known. In Victorian England, women would faint to appear fashionably frail.